LP3936SL LED Driver IC - Equivalent & Substitute Parts

Part Overview

The LP3936SL is a 9-output LED driver IC with integrated DC-DC regulator featuring step-up (boost) topology and PWM dimming capability. Manufactured by Texas Instruments, this component is designed for backlight and camera flash applications with a supply voltage range of 3V to 6V and output current of 25mA standard or 120mA in flash mode.

The LP3936SL is classified as obsolete. Locating equivalent or substitute components is necessary to support ongoing production requirements, maintenance operations, or design revisions where original inventory is depleted or unavailable.

Substiute Parts

LP3936SL

Texas InstrumentsIn Stock: 2344LP3936SL Datasheet

Current PartRFQ

LP3936SL/NOPB

Texas InstrumentsIn Stock: 1210LP3936SL/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP3936SL is determined by strict equivalence across the following critical parameters:

• Topology: Step-Up (Boost) DC-DC regulator
• Number of Outputs: 9 channels
• Voltage Supply Range: 3V to 6V input
• Voltage Output: 5.3V
• Current Capability: 25mA standard, 120mA flash mode per channel
• Switching Frequency: 1MHz
• Dimming Method: PWM
• Package: 32-WFLGA (32-TLGA 5.5x4.5mm)
• Operating Temperature Range: -40°C to 85°C
• Internal Switch Configuration: Integrated

The LP3936SL/NOPB variant meets all parametric requirements for direct substitution. This variant differs only in packaging format (Cut Tape) and compliance certification status, with no changes to electrical performance or functional specifications.

Parameter Comparison

Engineering Selection Recommendations

The LP3936SL/NOPB is a direct parametric equivalent to the LP3936SL. Both components share identical electrical specifications, functional performance, and physical packaging.

The primary distinction between these variants is compliance certification. The LP3936SL/NOPB carries ROHS3 compliance, whereas the original LP3936SL is RoHS non-compliant. For applications subject to RoHS regulatory requirements or environmental compliance mandates, the LP3936SL/NOPB is the appropriate selection.

Both variants are classified as obsolete products. Inventory availability is limited. The LP3936SL/NOPB currently maintains higher stock levels (1131 units) compared to the LP3936SL (2315 units), though both are available as new original components.

Frequently Asked Questions (FAQ)

Q: Can LP3936SL/NOPB be used as a direct replacement for LP3936SL?

A: Yes. The LP3936SL/NOPB is a parametric equivalent. All electrical specifications, output configurations, voltage ratings, current capabilities, switching frequency, and physical package dimensions are identical. The components are functionally interchangeable in circuit design and PCB layout.

Q: What is the difference between LP3936SL and LP3936SL/NOPB?

A: The variants differ in packaging format and RoHS compliance status. LP3936SL/NOPB is supplied in Cut Tape (CT) packaging and carries ROHS3 compliance certification. LP3936SL uses standard packaging and is RoHS non-compliant. Electrical performance and pin configuration are unchanged.

Q: Are there any package or pinout differences?

A: No. Both variants use the 32-WFLGA package with 32-TLGA (5.5x4.5mm) physical dimensions. Pinout, lead spacing, and PCB footprint requirements are identical.

Q: What is the MSL rating and handling requirement?

A: Both variants carry MSL 3 (168 Hours) moisture sensitivity level. Components must be stored in controlled humidity environments and baked according to IPC-A-610 standards prior to reflow soldering if moisture absorption limits are exceeded.

Q: Why is this component classified as obsolete?

A: The LP3936SL is no longer in active production by Texas Instruments. Existing inventory from authorized distributors represents the available supply. No new manufacturing runs are scheduled.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is valid only when the following parameters match: 9-output configuration, step-up boost topology, 3V-6V input range, 5.3V output, 25mA/120mA current capability, 1MHz switching frequency, PWM dimming, 32-TLGA package, and -40°C to 85°C operating temperature range.